In the Report "Genomic correlates of response to CTLA-4 blockade in metastatic melanoma," the version of table S4 posted on the Science website from 10 September 2015 through 13 November 2015 was not the final version intended for publication by the authors. Table S4 had undergone substantial revision during the peer-review process, including optimization of the neoantigen calling algorithm. Regrettably, the unrevised version of table S4, which had been uploaded with the initial paper submission, was inadvertently posted upon publication. An Erratum pertaining to the version of table S4 intended for publication—and unrelated to this posting error—was published on 13 November 2015. The link to the final, corrected version of table S4 has been available on Science’s website as of 13 November 2015 and can also be found here.